Liquid-metering apparatus



May 11 1926.

INVENTOR.

A TTORNE Y.

Patented May ll, 1926.

UNITED s'lumlz-sI PATENT OFFICE.

HERMGN L. VAN VAKEN'BURG, 0F MILWAUKEE, WISCONSIT, ASSIGNOR HALF TP WM. M. SWIFT MILLER? F WAUWATOSA, vWLISCONSIN.

0F ONE-v LIQ'U'ID-METERING APPARATUS.

Application med :une s, 1924. smal itu. 718,251.

This invention relates to improvements in liquid metering apparatus, more particularly adapted for measuring the amount of gasoline supplied to an internal combustion engme.

A further objectv of the invention is to provide a liquid metering apparatus which is combined with a gasoline feed vacuum system in a manner to positively indicate the amount of gasoline passing through the system. C

A further'object of the invention is to provide a liquid metering apparatus in which the i'loat of the vacuum system is compelled to positively move the full length of its travel in one direction before it can move y in the opposite direction.

A further object of the invention is to provide a liquid metering apparatus which is of simple construction, 1s strong and durable and is well adapted for scribed. 1 i

With the above and other objects in view, the invention consists of the improved liquid metering apparatus and its parts and cominations as set forth the claims and all equivalents thereof.

In the accompanying drawing in which the same reference characters indicate the same parts in all of the views:

Fig.'1 is a side view, partly in section, of the im norved metering apparatus shown connecte being partly in section; and

Fig: 2 is a horizontal sectional detail view .of a ortion of the device.-

Re erring to the drawing, the numeral 5 indicates a vacuum tank or receptacle which is provided with van inner measuring tank or receptacle 6 suspended from the upper end of the' vacuum tank. Said inner tank is formed withV a lower outlet opening 7 closed by a check valve 8 to discharge the contents of the inner tank into the outer tank. The outer tank is provided with `a discharge tube 9 which leads to the float chamber of the carburetor of the engine (not shown). The cap or top 10 of the tanks is provided with a dependi lug 11 to which is pivotally connected a ever arm `12 and from' the free end of this arm a float 13 is suspended. The cap 10 is also provided with another-depending lug 14 to which is pivotally connected an arm 15. A link 16 is connected medially to the lever arm 12 the purpose def to an indicator, the vindicator alsov and the arm 15 to cause said arms to'move limultaneously with the movement of the oat.

The cap member 10.is provided with a gasoline intake opening 17 for conduit connection with a source of supply, a suction opening 18 for connection with the intake manifold of the engine, an air intake ,opening 19, and and an indicator opening 20 which is connected` by a tube 21 to the indicator 22. The outer tank is .also open to the air by port 19. Said indicator may be ofv any type desired adapted to be actuated by a diaphragm 23 or any other equivalent device. i

The cap openings 18 and 19 are controlled by valves 24 and 25, the manifold opening valve 24 closing with an upward movement and the air inlet valve 25 opening with the same movement. A bell crank lever 26 also pivotally connected to the same pivot pin 27 as the arm 15 is pivoted to, 1s loosely connected to the stems of said valves and controls the opening and closing thereof. Coiled springs 28 connected to the projecting portions of the arms 15 and 26 and posif tioned on opposite sides of said arms are adapted to swing the arm 26 upwardly or -downwardly with a quick movement when the said springs are swung ping action at the end of each movement of the float as it is possible for the vibration of the automobile, of which the system forms a part, to cause the valve arm to tri before the desired amount of gasoline has en received into or is discharged from the inner tank 6. To provide for a fixed amount of gasoline admitted into the inner tank at each upward reciprocation of the float the free end of the lever arm 12 is provided with a segmental lian e 29 which is engaged by a pin 30 carried y the lower end of the lower arm 26 of the bell crank lever 26. The said segmental flange 29 passes upwardly on the right hand side of the pin 30 with respect to Fig. 1 when the lioat movesu wardly and downwardly on the let hand si e of the pin when the oat moves downwardly. The vseg-f mental flange is of suchcircumferential .length as to just pass above or below the lateral varc of movement of the pin 30 in moving the valves to open or closed posi'- tion. As said flange 29 swings very close to the pin 30 in both movements, the pin and likewise the bell crank lever 26 of which it forms a part, cannot swing in either di,- rection to move the valves to open or closed position until the float has completed its full movement and the exact predetermined amount of gasoline has entered or has-been discharged from the inner tank. t

Tn operation the valve 24,when in `open position will permit the suction of the engine to createa partial vacuum in the'innertank and this vacuum willcause the dia iragm 23 to move outwardly and the pawll'l to move downwardly the distance of 'one tooth. Now as the inner tank is filled to the predeter- -mined extent the lever will\be tripped to open the valve to the outside air .and close the valve to the intake4 manifold with the result that the vacuum will be relieved and the 4gasoline will be discharged through the valved opening 7 Simultaneously with this movement the diaphragm of the indicator will move inwardly to its normal position and pull the pawl 31 upwardly and turn the indicator wheel 32 one teeth and thus indicate the number of times the inner tank has been filled and discharged, and theamount of gasoline .supplied to lthe engine. As the valves cannot be tri ped until the inner tank has received its` ll and exact-amount of gasoline, .the amount` indicated will be practically exact. While the metering apparatus has been shown and described as particularly adapted for use with an internal combustion engine it is to be understood as applicable for other uses without departlng from the spirit and scope of the invention. From the .foregoingdescription it will be seen that the metering apparatus is of very simple constructionand is well adapted for the urpose described.

at I c1aim as my invention is: I l. A liquid metering ap -aratus, compris- 1 ing a. receptacle having a llquid supply co duit connected thereto, a suction conduit connected to the receptacle, a valve controlling the suction conduit, a float means `for actuating the valve, andA means for positivel preventing the movement of the valve until the rece tacle has received its'exact amount of liqui v 2. A liquid metering apparatus, comprising a receptacle having a .liquid sup ly conduit connected thereto, a suction con uit connected to the receptacle, a valvecontrolling the suction con actuating the valve, and 'means forming part of the connection betweengthe floatV and the yuntil the ioat reaches uit, a oat means for duit .connected thereto, a suction conduit connected to the receptacle, a valve controlling the suction conduit, an air inlet opening formed in the receptacle and a valve' therefor, a float means .for moving the valves, lever arms between the fioat means and the valves, and means carried by the arms for `positively preventing movement of the valves until the receptacle has received its predetermined amount of liquid.

4. A liquidA metering apparatus, comprising a receptacle having a liquid supply conduit connected thereto, a suctionv conduit connected to the receptacle, a valve controlling the suction conduit, an air inlet opening formed in the' receptacle and a. valve therefor, a ioat means for moving the valves, lever arms and a spring and a link between the iioat means and the valves, and a curved member carried by one of the arms and engaging another arm for positively preventing movement of the valves until the receptacle has receivedl its predetermined amount of liquid.

5. A liquid metering apparatus, comprising a receptacle having a liquid supply conduit connected thereto', a suction conduit connected to the receptacle, a valve controlling the suction conduit, an air inletopening formedin the receptacle and a valvev therevalves until the ioat reaches predetermined positions. f r

6. A liquid metering a paratus, compris'- ing a receptacle having a quid supply co1 1. duit connected thereto, a suction conduit connected-to 'the' receptacle, a valve controlling the suction conduit, an air inlet opening valves, lever arms connected together by a link, a s ring connecting one of the leverA arms to tlie bell cranklever, and a float connected to the other lever arm, said lastfmentioned lever arm having a se ental flange, which is alternately engage on opposite sides by thebell crank lever to prevent the bell cranklever from' moving the valves predetermined Apositions.

7. 'IA liquid metering apparatus ,comprising a receptacle having a 'quid sup ly conduit connected thereto, a suction' con ultl ccnico

lformed in the receptacle and a valve therefor, a bell crank lever connected to the nected to the receptacle, a valve controlling the suction conduit, an air inlet "opening formed in the receptacle and a valve therefor, a bell crank lever connected to the valves, lever arms connected together by a link, a spring connecting one of the lever arms to the bell crank lever, and a float connected to the other lever arm, said last mentioned lever arm having a segmental flange which is alternately engaged on opposite sides by a projecting portion of the bell crank lever, the said segmental ange being of such circumferential lengthwitli relation to the movement of the float as to positivelyl nected to the receptacle, a valve controlling the suction conduit, an air inlet opening formed in the receptacle and a valve therefor, a bell crank lever connected to the valves, lever arms connected together by a link, a 4spring connecting one of the lever arms to the bell crank lever, and a oat connected tothe other lever arm, said last mentioned lever arm having a segmental side iange which is alternately engaged on opposite sides by a projection on the lower arm ot the bell crank lever, said projection assing closely over the upper end of the ange ywhen the ioat is in its lowermost position and closely under the lower end of the {iange when the oat is in its uppermost position, said flange positively preventing any move- HERMoN L.' VAN VALKENBURG.

ment of the bell crank lever while the ioat 

